- authenticationModule
The System.Net.IAuthenticationModule to register with the authentication manager.
Type Reason ArgumentNullException authenticationModule is null.
The AuthenticationManager.Register(IAuthenticationModule) method adds authentication modules to the end of the list of modules called by the AuthenticationManager.Authenticate(string, WebRequest, ICredentials) method. Authentication modules are called in the order in which they were added to the list. If a module with the same IAuthenticationModule.AuthenticationType is already registered, this method removes the registered module and adds authenticationModule to the end of the list.